[PATCH 08/15] unpack-trees: don't rely on overlayed config

[Brandon Williams <bmwill@google.com>]

Don't rely on overlaying the repository's config on top of the
submodule-config, instead query the repository's config directory for
the submodule's update strategy.

Also remove the overlaying of the repository's config (via using
'submodule_config()') from the commands which use the unpack-trees
logic (checkout, read-tree, reset).

Signed-off-by: Brandon Williams <bmwill@google.com>
---
 builtin/checkout.c |  2 +-
 submodule.c        |  1 -
 unpack-trees.c     | 12 +++++++++---
 3 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/builtin/checkout.c b/builtin/checkout.c
index 9661e1bcb..246e0cd16 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -858,7 +858,7 @@ static int git_checkout_config(const char *var, const char *value, void *cb)
 	}
 
 	if (starts_with(var, "submodule."))
-		return submodule_config(var, value, NULL);
+		return git_default_submodule_config(var, value, NULL);
 
 	return git_xmerge_config(var, value, NULL);
 }
diff --git a/submodule.c b/submodule.c
index f86b82fbb..13380fed1 100644
--- a/submodule.c
+++ b/submodule.c
@@ -235,7 +235,6 @@ void load_submodule_cache(void)
 		return;
 
 	gitmodules_config();
-	git_config(submodule_config, NULL);
 }
 
 static int gitmodules_cb(const char *var, const char *value, void *data)
diff --git a/unpack-trees.c b/unpack-trees.c
index dd535bc84..dc66b880d 100644
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -1,5 +1,6 @@
 #define NO_THE_INDEX_COMPATIBILITY_MACROS
 #include "cache.h"
+#include "repository.h"
 #include "config.h"
 #include "dir.h"
 #include "tree.h"
@@ -255,13 +256,16 @@ static int check_submodule_move_head(const struct cache_entry *ce,
 {
 	unsigned flags = SUBMODULE_MOVE_HEAD_DRY_RUN;
 	const struct submodule *sub = submodule_from_ce(ce);
+	struct submodule_update_strategy update;
+
 	if (!sub)
 		return 0;
 
 	if (o->reset)
 		flags |= SUBMODULE_MOVE_HEAD_FORCE;
 
-	switch (sub->update_strategy.type) {
+	update = submodule_strategy_with_config_overlayed(the_repository, sub);
+	switch (update.type) {
 	case SM_UPDATE_UNSPECIFIED:
 	case SM_UPDATE_CHECKOUT:
 		if (submodule_move_head(ce->name, old_id, new_id, flags))
@@ -293,7 +297,6 @@ static void reload_gitmodules_file(struct index_state *index,
 				submodule_free();
 				checkout_entry(ce, state, NULL);
 				gitmodules_config();
-				git_config(submodule_config, NULL);
 			} else
 				break;
 		}
@@ -308,7 +311,10 @@ static void unlink_entry(const struct cache_entry *ce)
 {
 	const struct submodule *sub = submodule_from_ce(ce);
 	if (sub) {
-		switch (sub->update_strategy.type) {
+		struct submodule_update_strategy update =
+			submodule_strategy_with_config_overlayed(the_repository,
+								 sub);
+		switch (update.type) {
 		case SM_UPDATE_UNSPECIFIED:
 		case SM_UPDATE_CHECKOUT:
 		case SM_UPDATE_REBASE:
-- 
2.14.0.rc0.400.g1c36432dff-goog